Display stand



A. L. RAVEN DISPLAY STAND Dec. 7,1943.'

. Filed 001'.. 7, 1941 2 Sheets-Sheet l lIiillllllliilllllllllll.

INVENTOR le/f l. Fa/622 BY Zalk, H/s ATToRNEYs Dec. 7, 1943. l A, 1 AVEN2,335,884

DISPLAY STAND Filed 0G11. '7, 1941 2 Sheets-Sheet 2 Patented Dec. 7,1943 UNITED STATES PATENT OFFICE DISPLAY STAND Albert L. Raven, MountVernon, Y.

Application October 7, 1941;, Serial No. 413,943

(Cl. 160-24)v 19 Claims.

This invention relates to improvements in adjustable display stands,such as those used for supporting picture projection screens for showinghome movies, and such as is used for supporting music racks, floodlightprojectors for indoor amateur photography, and in window dressing fordisplaying drapes, maps, drawings and the like, and for other displaypurposes. The general object of the invention is to provide an improvedadjustable stand.

Although certain features of my improvements are applicable to displaystands for such general use as indicated, the stand is intendedparticularly for association with an elongated tubular casing such as isused to house a spring roller upon which is wound a projection'screen,map, drawing or the like.

It is desirable that such a display stand be so constructed thatwhatever the object supported by, or displayed thereon, whether a musicrack, or other device, the stand shall be capable of adjusting suchobject or device quickly to whatever position is desired, to suit theparticular surroundings. Stands of this kind as heretofore constructedhave required the operation of devices such as a thumb screw or a springlock in order to accomplish the adjustment. Such devices have provenunsatisfactory for one reason or another and my present invention aimsto provide a construction which will aiford this adjustment in anextremely simple and convenient manner, and which, moreover, can bemanufactured at extremely low cost.

When a display stand is combined with a spring roller casing, whichhouses a screen,`map or the like, it is desirable to be able to quicklyadjust the device so as to display the screen or map at any desiredelevation within the limits of the device. This requires that the screenroll casing be adjusted in its position upon the stand. Another objectof the present invention is therefore to provide an adjustable supportor connection between the screen roll housing and the mast of thedisplay stand which will meet the requirement'of ready adjustment and,in addition, produce a secure mounting of the parts.

Another important consideration in connection with display stands ofthis type is the'desirability of providing for the folding of thesupport and tubular casing into a compact package' for carrying fromplace to place and for storage when not in use. It has been founddesirable to arrange for the tubular casing and the stand to beconnectedr together in such a way that they con.- stitute, a vsingleunit under most conditions of use, but can be separated in case it isdesired to hang lthe casing on a wall for display purposes, the standbeing temporarily discarded. My present invention also aims to providethese advantages.

In using such display stands, particularly in displaying projectionscreens, it is not infrequently desired to place the stand on the top ofa desk or table having a highly polished surface, and for that reasonthe legs of such stands have been provided with feet of soft, yieldingmaterial such as rubber. The legs and feet of the stands as heretoforeconstructed have, however, been comparatively expensive to manufacture,and itis a further object of my inventionto provide a leg and footconstruction for display stands which simplifies the structure andreduces the manufacturing cost.

The invention will be understood from a consideration of theaccompanying drawings which illustrate the invention, for example, as'applied to a projection screen stand.

In these drawings:` n

Fig. 1 is aview in elevation of the displaystand showing it assupporting a motion picture lscreen in edge View in exhibiting position;

Fig. 2 is a fragmentary perspective View of the upper end of the mastshowing the details of the support for the upper edge of the screen;

Fig. 3 is an enlarged view of the joint between the mast of the displaystand and its extension;

Fig. 4 is a view showing the locking member of Fig. 3; y l

Fig. 5 is a view similar to Fig. 3 but partly in section showing thelocking joint between the tripod crown andthemast; n f f Fig. 6 is aView showing the locking member of Fig. 5;-

Fig. 7 is a view in vertical section taken on the plane indicated byline 'l-l of Fig. 8, showing the construction of the adjustable supportor connection between the screen casing .and the mast;

Fig. 8 is a section taken on the linsj-S of Fig. '7; p

Fig. 9 is a fragmentary sectional View, illustrating theswinging of thescreen casing into parallel relation with the mast, taken lon line Fig.v10 isa perspective View of the locking v member of Figs. 8 and 7;

of the same modification; Y 1

Referring now to the accompanying drawings, Y

the display stand is of the tripod type comprising three legs I of equallength and each pivoted at 2 to ears 3 (Figs. l and 5) projectingoutwardly from a crown member 4. Crown member 4 has a centralcylindrical opening 5 within which a mast 5 is longitudinally slidable.

At the lower end the mast is provided with a foot 'I to which links 8are pivoted at their inner ends. The outer ends of these links arepivotally connected to the legs I intermediate their ends so that bysliding the mast 6 downwardly, as viewed in Fig. 1, through the crown 4,legs I will be brought in contact and substantially parallel with oneanother, as shown in the left hand portion of Fig. 13, thus collapsingthe legs and shortening the over-all length of the device. When,however, the mast 9 is slid upwardly in the crown 4, the legs I arespread apart into position to support the stand, as shown in Fig. 1.

W'hen this is down, the links 8 assume some such angular position asshownin Fig. l, and it is necessary to lock the mast 9 relative to crown4 to prevent shifting movement therein in order to render the trinodstand stable. As illustrated in Fig. 5, the cylindrical opening 5 in thecrown 4 is made somewhat larger in diameter than that of the mast 6. Thelocking of the mast in the crown is accomplished, in accordance with onefeature of my invention, by means of a wedging member 9 which islongitudinally slide-ble ron the mast and enters this clearance space sothat the farther down the wedge member is shoved, the greater thewedging pressure between the surface o-f the mast and the interior ofthe opening 5.

Although any suitable construction of wedging member may be used, Iprefer a form of wedge such as illustrated in Figs. 5 and lrvvherein theWedge member 9 is a sleeve-like member whose upper portion surrounds themast and which is provided with a tapering tongue nortion I!! to enterthe clearance space. It will be observed that the farther the tongue If!is moved into the clearance space. the greater tlievvidth of this spacewhich is occupied by the tongue. although' the tongue is of uniformthickness, the entirev member 9 beingmade from a section of tubing.

. The stock out of which the sleeve-like Wedge member 9 is made may beof the same diameter `as the tubing which is ordinarily used for mast6--in lfact, waste pieces of the mast' material may be used, the wedgemember being enlarged sufliciently to slide on the exteriorfof mast 6 byslitting the Vcylindrical body longitudinally as indicated at II andspreading apart the margins of this slit. Since the curvature of thetongue IIJ is changed as the wedging member is shifted downwardly orupwardly, it is desirable to provide a longitudinal slot suchk asindicated at I2 centrally of the tongue in order to render it moreflexible.

In order to prevent the sleeve-like wedge member 9 from becoming jammedin the clearance space, so that it cannot be easily removed in order tochange the adjustment of the tripod, a stop I3 is provided to limit theextent to which the tongue Iii can enter the clearance space. This stopis preferably formed by making a pair of cuts I l transversely of theslit I2 and then forcing the metal outwardly at the corners formed bythe intersection of cut I4 with the slit.

Mast 6 is preferably provided with an extension I5 formed of a tube orrod and adapted to telescope within the upper end of the mast. The upperend of extension I5 is provided with a sho-rt horizontal arm II forsupporting the screen, map, or the like, indicated by the numeral I1.Screen Il is Wound upon a spring roller (not shown) housed within thetubular casing I8. One end of the shaft I9 of the spring roller is shownin Figs. '7 and 13 and pro-- jects somewhat from the surface of the endof casing I 8.

In order to support the upper edge of the screen I'I against its ownweight and the tension of the spring roller, a rigid strip, or batten,29 is secured along the upper marginal edge of the screen (Fig. 2). Thisholds the sheet hat without wrinkles. To attach the batten 20 to the armI6 a wire loop 2| preferably formed with converging substantiallystraight sides as shown in Fig. 2 is provided. This is secured to thebatten by means of a metal clip 22 and screws 23. Two notches 24 areprovided opposite one another in the sides of the preferably iiatsupporting arm I6 into which the converging'sides of loop 2| engage. Theouter end of arm I6 is provided with an aperture 25 into which the endof screen roller shaft I9 projects to assist in holding the casing I8and display stand 5 in folded position as shown in Fig. 13.

Referring now to Figs. 3, 4 and 1, the extension I5 is secured in anydesired position to which it may be adjusted by means of alongitudinally sliding wedge member 25, the lower end of which isslidable into a clearance space which is provided between the outersurface of extension I5 and the inner surface of mast 6. This wedgingmember 26 may be of any suitable construction, but is preferably madelike the wedging member 9 except that it is unnecessary to provide thestops I3. Therefore, like wedging member 9, it is provided with atapering downwardly projecting tongue Illa to enter the clearance spaceand with a weakening slot Ilia to make it more flexible. If desired itmight be manufactured from waste pieces occurring during the making ofthe extension member l5.

The screen I1 unrolls to a denite predetermined width (verticaldimension) and in order to provide for the vertical adjustment of thecenter of the screen at diiferent heights from the floor or supportingsurface of the tripod. mast 6 including its extension I5, when extendedto its greatest length, is longer than the width of the screen. Also toenable this vertical adjustment of the screen as a whole, the mountingfor the screen casing I8 is adjustable on mast B. This mounting isillustrated in Figs. 7, 8 and 9 and comprises tWo parallel metal 'plates21 and 28, some two or three inches wide, spaced apart from one anotherapproximately the diameter of mast 6 and joined together at their outer'edges by a vertical web 29. These platesA are plate 21 there is a.U-shaped recess $33 (Fig. 9)

and` extending inwardly from the opposite edge of the lower plate 28there is a similar .recess 34. These two recesses are of equal depth andoverlap one another at they center line `of plates 21 and. 28. Therecesses are substantially the same width as thethickness of mast 6 andthebottoms of the recesses iit the surface of the mast. The two recesses331 and 34 overlap Vone another suiiicientlyto form a completeapproximately circular opening when viewed at right angles to the planeof the plates.. kHence when the casing IS. with this supporting .deviceis placed upon mast 6 .with the plates 2 and 28 at right anglesto themast, as shown in Figs. 7 and 8, the screen casing I8 will besupportedaat right angles to the mast in exhibiting position.

The oppositely directed U-shaped recesses 33 necessary to bring thecenter of the screen at the height desired. Provision is Ymade forclamping the casing to the mast in this position' by means of a slidingwedge member which engages the outside of the mast as shownin Fig. 8.This wedge member may be constructed as a iiange projecting at rightangles from a wedge body member 36 (Fig, 10). This wedge body member ispositioned on the inside of web 29 and is provided with projections 3lwhich are bent around the side edges of web 29 and serve to hold thewedging device to prevent its displacement frorn operativeV positionandA at the same time permit the necessary' sliding movement.

In the modification of' the adjustable support or connection between'the tubular casing and the mast which is'illustratedin Figs. l1 and 12,the general arrangement is similar to that shown in Fig. 7. yTheparallel plates 27a and 28a, web 29a and flanges 30a and Sta are thecounterparts of the like elements'of Fig. 7. Plates 27a and 28a are alsoprovided with oppositely di-` rected U-shaped recesses 33a and a, butrecess 34a. in one of the plates, preferably the lower plate 28a, issomewhat wider than the thickness of mast 5 andthe width ofrecess i3d inthe opposite plate. This permits the side walls of recess 33a to gripthe mast by a clutching action under the sagging of casing I3, as shownin Fig. 11.

Thel casing can be vadjusted to'any desired position on the mast merelyby lifting it so as to rock plates Zia and 23a into a positionperpendicular to the mast and holding them in such position as thecasing is raised. or'lowered to the desired elevation. Then the releaseof thecasing from the hand causes the sagging to take place accompaniedby the gripping or clutching action In the modification shown in Figs.17 vand 18,l

the 'construction of thev adjustable support is similar to that shown inFigs.. '7 and 8 except that the two plates 2lb and 28h, instead of beingparallel to one another, are angularly disposed,

the two .platesbeing formed by bending a singleV sheet of material ofsuitable width at. the'point or line '48, the two plates in end viewforming va V-shaped structure turned on its side. The edges of the twoplates are riveted to the casing forming a triangular structure withinwhich the mast 6 lies whenr the casing is swung parallel to the mast. i`To lpermit this swinging movement the plates are. .opposit'elyslottedor recessed as indicated at 33h and 34bin the same manner as plates 2'Iand 23. These slots are just enough wider than the thickness of mast (ito permit the triangular adjustable support to be slid vertically alongltheV mast when the support with the casing I8 is in vhorizontalposition, indicated by the dotted line in Fig. 17. Hence by holding itin this position, the .casing may be adjusted to any desired elevationon the mast; then on its release, the weight of the casing and screenroll 49 within'v causes the device t0 tilt or sag somewhat, as indicatedin Fig. 17 and this causes the margins of slot 34h in the lower plate togrip the mast. If the screen II is unrolled, the pull of the screen willraise the casing so as to tilt the device in the opposite direction, inwhich event the recess 33h in the upper plate will clutch the .mast andholdV the casing in itsad-justed position.

If desired'- a wedging memberl (not shown) somewhat similar to wedgemember 35, 36 of. Figs.

7 :and 3, Vmay bel inserted in the space betweeny the' tip portion' i8and the mast so as to hold theY casing' in adjusted position in the samemanner as described above in connection'with Figs.- 7 and'fSi.The'triangularr formation ofy the adjust'- .able 'support shown in Figs.17 and 18 produces a sturdy construction and one which can vbe stampedout at a low tool cost. ,Y

Referring now to Figs. 16 and l, the legs I of the tripod are made bylfolding apreviously stamped-out piece of sheet metal of suitable gaugealong its median line to form two spaced parallel sides 3d and 39' ofequal width andcnnected by a foldportion 49. This forms a channel-shapedmember in cross section which facilitates the pivoting of the legs tothe' tripod crown',y as shown'at 2 inv Fig'. 5, and also the attachmentofthe outer ends of li'nks 8'. Heretofere in order toy providetacushionedfoot for the legs of a tripod sta-nd, it has ybeen customary tomakeV the bottom of the legs of a different formation from the top inorder to accommodate a thimble-like cushion member. orr foot which wasslipped ontothelcwerl end ofthe leg. `This was an expensive procedurenotonly on account of the cost of the rubber thimble, but because thelower end of the leg must be manufactured in a different formation fromthe upper end.

By means of the construction which I have provided., however, the rubberthirnbley is replaced by a disc l!! preferably of rubber or othersuitable resilient or cushioning material. This disc, however, may bemade of hard material having a smooth periphery. Disc 4I. is held inposition between two parallclears 5.2 byY means of a rivet',l

orthe; like, 63. This form of cushioning foot enables the 'ears l2 to beshaped and .dimensioned to exactly correspond with the ears M at theopposite or upper end of the leg bywhich the leg is pivoted to thetripod crown. This cheapens the manufacturing 'cost of the legs and theassembly cost of the tripod since both ends of the legs are identical.The ears 43 and 44 can be formed by the same punch and die, thusreducing the tool cost.`

As touched upon previously, the tripod stand and the tubular casing I8are folded into parallel relation with one another asY shown in Fig.13,' for transportation or storage. This is accomplished withoutseparating these two elements one from the other by releasing the casingsupporting plates 21 and 23 or 21a and 28a from the mast 6 (after thescreen, map, or the like, I'I has been rolled up on the roller withinthe casing) and then lturning the casing until it is parallel with themast. In this position the mast occupies the space between the twoparallel plates (Figs. 14 and 13) on account of the oppositely directedrecesses.

'This folding action can take place in only one direction and thearrangement is such that the heavy end of the screen casing I8 (the endwhich contains the operating mechanism of the screen roller includingthe shaft I 9) is moved into proximity to the upper end of the displaystand which contains the'mast extension I5 and horizontal arm I6. Theaperture 25 in the end of this arm is then fitted over the end of shaftI9 and eXtension I is slid downwardly and locked in this positionthrough the manipulation by the fingers of sleeve-like wedging member26.

vThis completes the folding of the stand except for the snapping intoposition of bail member 45 by which the lower or tripod end of the standand the case are bound together. This bail member is pivoted as shown at46 in the sides of the cap at the end of the casing. When they swinginto position the center 41 of the bail snaps over one of the disc-likefeet 4I of the tripod. While the resiliency of this disc may permit thisaction to take place, the snapping engagement of the bail with the foot,when the foot is made of hard material, is effected by providing thebail with side portions which are bowed outwardly, as shown in Figs. 14and 15. By squeezing these slightly, the center 41 is forced outwardlyallowing it to snap into place.

The screen roll casing I8 is heavier at one end than at the other onaccount of the weight of the operating mechanism of the roll. Hence,when the casing is supported at its center, as by means of the bracketabove described by which it is connected to the mast 6, the casing willbe unbalanced and the heavierY end will tend to swing downward. Thebracket plates 2'I and 28 with their oppositely directed U-shapedrecesses are so arranged that when the device is in folded position theheavier end of the screen roll casing is adjacent the top of the displaystand. This is indicated by the fact that the shaft I9 is attened,indicating that it is the shaft of the screen roll operating mechanism.

In setting up the device the rst step, after releasing bail 45, is torelease sliding wedge 26 and shift extension I5 so as to release arm IBfrom the end of shaft I9 and thereby allow the casing I8 to be swunginto position at right angles to the mast 6. Since the heavier end ofthe roll casing I8 is at the top, the casing seeks by gravity thishorizontal position as soon as released. The bottoms of the twooppositely directed recesses in the parallel plates of the support stopthe rotation of the case at the horizontal position, and the case ismaintained in this position by the overbalancing of its heavier end.'Ihis is of material assistance in handling the device during thespreading ofthe tripod legs, the adjusting of the extension I5 to theproper height, the unrolling of the screen and attachment of the bail 2|to the supporting arm IB, and finally the adjustment of the casing I8tothe proper position. Y

Another advantage of placing the heavier end of the roll casing I8adjacent the upper end of the display stand when folded is that thisproduces a more evenly balanced package for carrying by hand.

It will be understood that changes may be made from the exemplifyingdisclosure given above without departing from the spirit of theinvention, the scope of which is set forth in the appended claims. Itwill further be understood that in these claims the term screen isintended to include maps, drawings or the like, as well as screens forreceiving projected pictures.

I claim:

1. A display stand having a, base and a member mounted thereon having anaperture therein, a device for display and a rod-like member supportingsaid device, said rod-like member being longitudinally adjustable withinSaid aperture and loosely tting the same so as to leave a clearancespace between the surface of said member and the wall of the aperture,and a longitudinally slidable wedge member operating in said clearancespace to lock said members in adjusted position.

2. A display stand having a base and a member mounted thereon having anaperture therein, a device for display and a rod-like member supportingsaid device, said rod-like member being longitudinally adjustable withinsaid aperture and loosely fitting the same so as to leave a clearancespace between the surface of said member and the wall of the aperture,and a sleeve-like wedge member on said rod-like member andlongitudinally slidable in said clearance space to lock said members inadjusted position.

3. A display stand having a base and a member mounted thereon having anaperture therein, a device for display and a rod-like member supportingsaid device, said rod-like member being longitudinally adjustable withinsaid aperture and loosely fitting the same so as to leave a clearancespace between the surface of said member and the wall of the aperture,and a sleeve-like wedge member having a portion surrounding the rod-likemember and a tapering tongue portion adapted to occupy more or less ofsaid clearance space as the wedge member is shifted, thereby locking orinterlocking said members.

4. In a tripod stand, a crown member including a collar, legs pivotallyattached to the crown member, a mast having links at its lower endconnected to the legs and slidable in the crown collar to adjust thelegs and maintain them in spread relation, the mast being slightlysmaller than the interior of the collar so as to leave a clearance spacetherebetween, and a longitudinally shiftable wedge member operating insaid learance space to lock the stand in display posiion.

5. In a display stand for rolled screens having a vertically adjustablemast and means for supporting the screen roll casing, a device forsupporting the upper edge of the screen comprising a horizontal arm atthe top of the mast having a pair of notches disposed opposite oneanother in opposite sides of the arm, and a rigid loop member attachedto the upper edge of the screen and having upwardly converging sidesadapted to cooperate with said notches to support the screen.

6. In a display stand for rolled screensv having abase portion, a mast,and an elongated casing having a rolled screen therein, a device forsupportingr the casing in adjusted position on the mast comprising apair of plates projecting from the surface of the casing substantiallyparallel with the axis thereof and spacedl apart substantially thethicknessy of the mast, each of said plates having a U-shaped recess ofsubstantially the thickness of the mast, said recesses extending fromthe opposite edges of said plates and overlapping one another at theirbottoms thereby making the casing positionable at right angles to themast or parallel therewith, the mast extending between said plates whenin the latter position and extending through said plates when in theformer position, and means for locking the device to the mast whenpositioned at right angles thereto.

7. In a display stand for rolled screens having a base portion, a mast,and an elongated casing having a rolled screen therein, a device forsupporting the casing in adjusted position on the mast comprising a pairof parallel plates projecting from the surface of the casingsubstantially parallel with the axis thereof and spaced apartsubstantially the thickness of the mast, each of said plates having aU-shaped recess of substantially the thickness of the mast, saidrecesses extending from the opposite. edges ofv said plates andoverlapping one another at their bottoms thereby making the casingpositionable at right angles to the mast or parallel therewith, the mastextending between said plates when inthe latter position andextendingthrough said plates when in the former position, and means forlocking at least `one of said plates to the mast when the case ispositioned at right angles thereto.

3. In a display stand for rolled screens having a base portion, a mast,and an elongated casing having a rolled screen therein, a device forsupporting the casing in adjusted position on the mast comprising a pair0f parallel plates projecting from the surface of the casingsubstantially parallel with the axis thereof and spaced apartsubstantially the thickness of the mast, one of said plates having aU-shaped recess of substantially the thickness of the mast, the other ofsaid plates having a similar recess somewhat wider than the thickness ofthe mast, said recesses extending from the opposite edges of said platesand overlapping one another at their bottoms, thereby making the casingpositionable at right angles to the mast or parallel therewith, the mastextending between said plates when in the latter position and extendingthrough said plates when in the former position, the wider recesspermitting the tilting of the device so as to cause the edges of thenarrower recess to grip the mast, but serving as a guide during theswinging movement of the casing from folded or parallel position todisplay position.

9. In a display stand for rolled screens, a screen roll casing, afoldable supporting stand therefor having a mast and legs foldable intoparallel relationship, the casing being at right angles to the mast whenin display position and swingable parallel therewith to form a compactpackage, and means for releasably connectposed adjacent thetop end`v of'saidvmast so that when said connections arex released the casing tendsto assume by gravity a positionat right angles to the mast.

110. In a display stand for rolled screens having a screen foil` casing,a supporting stand therefor including a mast'andfeet foldabe intoparallel relationship, the casing being at right angles to the mastwhenin display position and positionable parallel therewithto form a compactpackage, the legs of the supporting stand having resilient outwardlybulging footv members,K and means for releasably securing togetheronegend of said casing and the lower portionk of said stand comprisingAa bail member pivoted to the casing and adapted to be held in connectingengagement with theY stand by coaction with one of said resilient feet.

il. In a display stand for rolled screens having av screen` roll casing,ay supporting stand therefor including a mast and feetv foldable intoparallel relationship, the casing' being at'right'angles to the mastwhen .in displayposition and positionabie parallel therewithto form acompact package, the legs of the supporting stand having resilientoutwardly bulging foot members, and means for releasably securingtogether one end of said casing and the lower portion of said standcomprising a bail member pivoted to the casing and adapted to be held inconnecting lengagement with the stand by coaction with one of saidresilient feet, a screen roll within the casing having a shaftprojecting through'the op` posite end of the casing from said bail, andmeans for securingthe top oi" the mast to said opposite end of thecasing comprising aV laterally projecting arm having an apertureVtherein adaptedA to engage` the projectingv end'A of the screen rollshaft.

l2. In a display stand for rolled screens having a base portion, a mastand an elongated casing having a rolled screen therein, a device forsupporting the casing in adjusted position on the mast comprising a pairof plates projecting from the surface of the casing substantiallyparallel with the axis thereof, each of said plates having a U-shapedrecess of a width to receive the mast, said recesses extending from theopposite edges of said plates and overlapping one another at theirbottoms thereby making the casing positionable at right angles to themast or parallel therewith, the mast extending between said plates whenin the latter position and extending 1through said plates when in theformer posiion.

13. In a display stand for rolled screens having a base portion, a mastand an elongated casing having a rolled screen therein, a device forsupporting the casing in adjusted position on the mast comprising a pairof plates projecting from the surface of the casing substantiallyparallel with the axis thereof, each of said plates having a U-shapedrecess of a width to receive the mast, said recesses extending from theopposite edges of said plates and overlapping one another at theirbottoms thereby making the casing positionable at right angles to themast or parallel therewith, the mast extending between said plates whenin the latter position and extending through said plates when in theformer position, one of said recesses being wider than the other, thewider recess permitting the tilting of the device so as to cause theedges of the narrower recess to grip the mast.

14. In a tripod stand, a crown member including a collar, legs pivotallyattached to the crown member, a mast having links at its lower endconnected to the legs and slidable in the crown collar to adjust thelegs and maintain them in spread relation, the mast being slightlysmaller than the interior of the collar so as to leave a clearance spacetherebetween, and a. sleeve-like wedge member on said mastlongitudinally slidable into said clearance space to lock said mast inadjusted position.

15. In a tripod stand a crown member including a collar, legs pivotallyattached to the crown member, a mast having links at its lower endconnected to the legs and slidable in the crown collar to adjust thelegs and maintain them in spread relation, the mast being slightlysmaller than the interior of the collar so as to leave a clearance spacetherebetween, and a sleeve-like wedge member having a portionsurrounding the mast and a tapering tongue portion adapted to occupymore or less of said clearance space as the wedge member is shifted,thereby locking said mast in adjusted position.

16. In a display stand for rolled screens having a base portion, a mastand an elongated screen roll casing, a device for supporting the casingin adjusted position on the mast comprising a pair of plates projectingfrom the surface of the casing substantially parallel with the axisthereof, said plates having alined apertures therein to receive themast, one of said apertures being only slightly larger than the mast andthe other of said apertures being substantially larger than the mast topermit the tilting of the device so as to cause the edges of the iirstaperture to grip the mast.

17. In a display stand for rolled screens having a base portion, a mastand an elongated screen roll casing, a device for supporting the casingin adjusted position on the -mast comprising a pair of plates projectingfrom the surface of the casing substantially parallel with the axisthereof but in non-parallel relation to each other, said plates havingalined apertures therein to receive the mast, one of said aperturesbeing only slightly larger than the mast and the other of said aperturesbeing substantially larger than the mast to permit the tilting of thedevice so as to cause the edges of the nrst aperture to grip the mast.

18. In a display stand for rolled screens having a base portion, a mastand an elongated screen roll casing, a device for supporting the casingin adjusted position on the mast comprising a plate projecting from thesurface of the casing substantially parallel with the axis thereof andhaving an aperture therein to receive the mast, said aperture being onlyslightly larger than the mast and serving as a clutch to grip the mastwhen said plate is tilted with respect thereto by the weight of thecasing.

19. In a display stand for rolled screens having a screen roll casing, asupporting stand therefor including a mast and legs foldable intoparallel relation, the casing being at right angles to the mast when indisplay position and positionable parallel therewith to form a compactpackage, the legs of the supporting stand being placed adjacent one endof said casing and the mast towards the opposite end thereof, means forattaching the mast to said casing and means for releasably securingtogether one end of said casing and the lower portion of said standcomprising a bail member pivoted to the casing and adapted to be held inconnecting engagement with the stand by coaction with one of said legs.

ALBERT L. RAVEN.

